Home / 12,115,576.60-18,157,928.10-6,438,520.60

Finding the Fourth Proportional to 12,115,576.60, 18,157,928.10 and 6,438,520.60

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Solution

The fourth proportional to 12,115,576.60, 18,157,928.10 and 6,438,520.60 is: 9,649,577.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,576.60 : 18,157,928.10 = 6,438,520.60 : x
  2. Step 2: Convert to fraction form
    12,115,576.60/18,157,928.10 = 6,438,520.60/x
  3. Step 3: Cross multiply
    12,115,576.60x = 18,157,928.10 × 6,438,520.60
  4. Step 4: Simplify right side
    12,115,576.60x = 116,910,194,125,168.86
  5. Step 5: Solve for x
    x = 116,910,194,125,168.86/12,115,576.60
  6. Step 6: Final answer
    x = 9,649,577.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.